@Gareth: lol
@inzomiac: I was going to inform you about this amazing Green Package with two level referral plan I've heard about :P
Instead I'll be somewhat helpful:
One thing I've been seeing a lot recently are scans for specific php mailing list management software and attempts to get them to send spam messages. The scans don't seem to be targeted (since they are requests for software that's not even present on the target).

there is no one new spam technique; the newest effective strategy change was for compromised home machines to use their designated relay host to forward spam instead of directly connecting to the victim's mail server directly. It is causing issues, and is mostly the responsibility of ISPs to defeat by keeping track of user activity on their network and shutting down their customers compromised machines.

It was a necessary change for spammers since large ISPs such as COX force their customers to go through relay servers (which is a good thing for most of the unwashed masses), but now they need to do checks on how many emails are transferring per min, or whatever metric works best.

There are good and bad aspects to the change.

Good:
large ISPs (some) are being (somewhat) responsible about their users spamming the internet, forcing the spammers to use new techniques.

The larger the ISP the easier it is to target, the responsible ISPs put further burden on spammers because compromising large, easy to compromise targets aren't as easy to use now.

Bad:
The prize is still way way way bigger than the blocks that have been put in place.